Ptolemy's geography describes commercial relations between western India and Alexandria, the chief eastern emporium of the Roman Empire. He identified Kanyakumari along with the Gulf of Mannar as a center for pearl fishery. He also identifies Korkai (assumed to be the present day's Tuticorin), a place to the east of Kanyakumari, as an emporium of pearl trade.

Another ancient Greek book, the Periplus of the Erythraean Sea, contains sailing directions for merchants from the Red Sea to the Indus and Malabar, and even indicates that the coast from Barygaza (Baroch) had a general southward direction down to and far beyond Cape Komari.

Kanyakumari District consists of those parts known locally as Nanjil Nadu and Idai Nadu. The names of the villages of the district such as Azhagiapaandipuram, Bhoothapandy, Cholapuram and Kulasekaram reveal that these places were governed by several rulers at different periods of time.[clarification needed] Nanjilnadu was under the rule of Pandiyas till the early 10th century and then under Cheras.

The Kalkulam and Vilavancode taluks were under the rule of the Chera Dynasty. When the power of Chola declined due to the rise of Hoysalas and western Chalukyas, the Venad (Travancore) Chieftains (descendants of the central Chera family) took advantage of the situation and gradually established their hold on considerable areas in Nanjilnadu. Veera Kerala Varma, one such chieftain, styled himself as "Nanjil Kuravan". The annexation commenced by Veera Kerala Varma was to a large extent continued by his successors and completed by AD 1115.

For about four centuries, the Venad was ruled by powerful kings who were consistently making incursions into the Pandian territories. As a result, Vijayanagar kings proceeded against Venad. In 1609 Kanyakumari fell into the hands of Viswanatha Nayak of Madurai. Consequent on this, there was no serious threat to Nanjilnadu until 1634. During the regime of Ravi Varma and Marthanda Varma, Venad was disturbed by the internal strife.

Sanda Sahib of Arcot took advantage of this situation and attacked Nanjilnadu. Although Marthanda Varma was victorious in the battle of Colachel and defeated the Dutch armouries who helped the local feudatories, he could not cope with the threat from Sanda Sahib, which forced him to withdraw from the battlefield. After Marthanda Varma, Venad had weak rulers and as a result there was frequent interference by the British (who knew it as Cape Comorin) whose control was completely established over Venad and continued until 1947. From 1947 to 1956, it was under the personal rule of Maharaja of Travancore. During the period between 1956–1961, the administrative system has fallen in line with that of other districts in Tamil Nadu.[4]

Kanyakumari has been a great centre for art and religion for centuries. It was also an area of great trade and commerce. It was ruled by the Cholas, the Cheras, the Pandyas and the Nayaks. The architectural beauty of the temples in the area are the works of these rulers. Later Kanyakumari became part of the Venad kingdom with its capital at Quilon. The king of Venad, Anizham Thirunal Marthanda Varma, established Travancore by extending his domain further north up to Azhva, during his reign from 1729 to 1758. By this, the present Kanyakumari District came to be known as Southern Travancore. In 1741, Maharaja Marthanda Varma defeated the Dutch East India Company at the famous Battle of Colachel.

Kanyakumari was under the rule of the Pandyan Kings till the downfall of Pandyas, and later by kings of Travancore under the overall suzerainty of the British (as "Cape Comorin") until 1947, when India became independent. Travancore joined the independent Indian Union in 1947. The reign of the Travancore royals came to an end.

In 1949, Kanyakumari became part of the reconstituted Travancore-Cochin State. Around this time, a popular agitation by the Tamil-speaking people of the district for the amalgamation of Kanyakumari District with Tamil Nadu intensified under the leadership of Marshal Nesamony who is called as 'Kumari Thanthai' (Father of Kanyakumari district). Marshal Nesamony was instrumental in the merger of Kanyakumari district with Tamil Nadu (then known as Madras State) in 1956 during the linguistic reorganisation of states.

As of the census of India 2001, Kanniyakumari had a population of 19,739 comprising 9,884 males and 9,855 females, making the sex ratio (number of females per thousand males) of the town to 997. A total of 2,403 people were under six years of age and the child sex ratio (number of females per thousand males under six years of age) stood at 1,024. The town had an average literacy of 88.62%, higher than the national average of 59.5%.There were total of 4,236 households in the town. As of 2001, Kanniyakumari had a total of 5,929 main workers: 11 cultivators, 78 agricultural labourers, 66 in house hold industries and 5,774 other workers. There were a total of 119 marginal workers: 4 marginal cultivators, 3 marginal agricultural labourers, 11 marginal workers in household industries and 101 other marginal workers.[5]

This area is very beautiful. Since the early 1970s, tourism has been an industry in the town. Because of this it is one of the few small towns in South India where one can hear many of the different languages of India spoken in the street.

Of late, the promotion of tourism has increased, with increasing emphasis on attractions outside the town, such as the surrounding landscapes, as well as the historical and religious sites found around the district. Ultimately a total of 1.9 million tourists (domestic and foreign) visited Kanyakumari in 2007.[9]

Though there are several places of tourist-interest in the town and district, Kanyakumari is especially popular in India for its spectacular and unique sunrise and sunset, thanks to its being nearly surrounded by waters. On balmy, full-moon evenings (locally called Chitra Pournami), one can also see the moon-rise and sunset at the same time.

Kanya Kumari is notable for pilgrimage and tourism. The place takes its name from the goddess Devi Kanya Kumari, considered to be a sister of Krishna. Women pray to her for marriage. The goddess is believed to be the one who removes the rigidity of our mind. The temple here is a Shakti Peetha, one of the holiest shrines of the Mother goddess. Also nearby are eleven sacred theertham.[10]

The place was called Kanyashram of the Baalaambika, the deity of the temple. The sea ablution for Pitr Tarpan is done here. This is one of the rare temples in India where Devi (Mother Goddess) is worshipped as a child. The rites and rituals are done in the Kerala Namboothiri method, so there are slight differences in the way of worship compared to the temples of the nearby region. The deity is the goddess of Sanasa,[10] so people from all over India who desire to devote their life as Sanyasin come here and take the deeksha. Swami Vivekananda came to this temple as directed by his Guru Shri Ramakrishna Prarama Hamsa, being a Sanyasin. The temple is very old and is mentioned in ancient Sanskrit literature.

The beach sands are multi-coloured and likened to a mythological story.

There is a shrine for Kalabhairava in the temple. It is said that the backbone area of Sati Devi’s corpse fell here.

The place is famous for Agastyar mala where Sage Agastya lived. He is the founder of Siddha vydya, so there is innumerable medicinal plants available here. He is also considered as the founder of Varma Kalai, a form of martial arts.

The Thiruvalluvar Statue has a height of 95 feet (29 m) and stands upon a 38 foot (11.5 m) rock that represents the 38 chapters of "virtue" in the Thirukkural. The statue standing on the rock represents "wealth" and "pleasures", signifying that wealth and love be earned and enjoyed on the foundation of solid virtue.[12] The combined height of the statue and pedestal is 133 feet (40.5 m), denoting the 133 chapters in the Thirukkural. It has a total weight of 7000 tons.The statue, with its slight bend around the waist is reminiscent of a dancing pose of the ancient Indian deities like Nataraja. It was sculpted by the Indian sculptor Dr. V. Ganapati Sthapati, who also created the Iraivan Temple. Its opening ceremony was on 1 January 2000. The monument was hit by the Indian Ocean Tsunami on 26 December 2004.[13]

The Vivekananda Rock Memorial is a popular tourist monument in Vavathurai, Kanyakumari, India. The memorial stands on one of two rocks located about 500 metres east of the mainland of Vavathurai, India's southernmost tip. It was built in 1970 in honour of Swami Vivekananda who is said to have attained enlightenment on the rock.[1] According to local legends, it was on this rock that Goddess Kumari performed austerity. A meditation hall (Dhyana Mandapam) is also attached to the memorial for visitors to meditate. The design of the mandapa incorporates different styles of temple architecture from all over India. It houses a statue of Vivekananda. The rocks are surrounded by the Laccadive Sea. The memorial consists of two main structures, the Vivekananda Mandapam and the Shripada Mandapam.[3]

The Gandhi Memorial Mandapam has been built on the spot where the urn containing the Mahatma's ashes was kept for public viewing before immersion. Resembling central Indian Hindu temples in form, the memorial was designed in such a way that on Mahatma Gandhi's birthday, 2 October, the first rays of the sun fall on the exact place where his ashes were kept.[3]

Bhagavathy Amman Temple is a 3000-year-old temple dedicated to Goddess Kumari Amman located at Kanyakumari. Kumari Amman is one of the form of Devi, popularly known as “Kumari Bhagavathy Amman”. Kumari Bhagavathy Amman temple is the first Durga temple created by Lord Parasurama and one of the 108 Shakthi Peethas. This temple is situated at the shore of the Laccadive Sea. Kumari temple has been mentioned in Ramayana, Mahabarata and Purananooru.[14]

Ayya Vaikundar Nizhal Thangal is a beautiful shrine dedicated to Ayya Vaikundar in Attoor, a small hamlet in Kanyakumari. It is revered shrine for followers of Ayyavazhi, who believe that Ayya Vaikundar is an avatar or incarnation of Lord Narayana. Ayyavazhi, a dharmic belief system, is based on the teachings and life history of Ayya Vaikundar.The highlight of this place is its unique architectural style - Sahasrara (literal meaning white lotus). Historians believe that it is the first temple to boast Sahasrara architecture. Originally, this structure was built in 1988; however, it was reconstructed and inaugurated in the year 2007. The foundation stone of the new thangal was laid in 2005 by the present religious leader of Ayyavazhi - Bala Prajapathi Adikalar.

Kamarajar Mani Mantapa Monument was raised and dedicated to a freedom fighter and Former Chief minister of Tamil Nadu, President of Indian National Congress, Mr Kamarajar. He's also popularly known as Black Gandhi among the masses. Like the Gandhi Mantapa, this place is where Kamarajar's ashes were kept for the public to pay homage before immersion into the sea.[15]

This granite palace is a fortress and was the residence of the Travancore rulers. It was constructed around 1601 AD. This palace also has a small museum that contains various artifacts from the older times.[16]

The ferries transporting tourists from mainland to the islands can be seen with one returning to the mainland and the other one about to stop at the Tiruvalluvar statue after carrying over tourists from Vivekananda Rock

The state-owned Poompuhar Shipping Corporation runs ferry services between the town and the Vivekananda Rock Memorial and Thiruvalluvar statue, situated on rocky islets off the coast. The operation of the ferry service began in 1984. Two ferries were used to ferry the tourists until June 2013, after which a new ferry was added to the service on the occasion of 150th birth anniversary of Swamy Vivekananda.[17] Kanyakumari is directly connected by rail with almost all metropolitan cities in India.[18] The nearest airport is Thiruvananthapuram International Airport, 90 km (56 mi) from Kanyakumari Town and 70 km (43 mi) from Nagercoil.[19] Kanyakumari is 744 km (462 mi) from Chennai.[20]

The Tamil Nadu State Transport Corporation runs a circular bus to visit tourist spots. Circular bus route - Kanyakumari to Kanyakumari via Vattakottai, Padmanabhapuram palace, Thottipalam, Pechipparai dam, Thirparappu Falls, Muttom beach and Suchindrum Sthanumalayan temple. The bus will start at 7 a.m. just after sunrise and return to Kanyakumari by 6 p.m. so that tourists can also view sunset on sea. The fare per trip is Rs. 200/- for adults and Rs. 100/- for children.[21]

According to Hindu legend, Kanya Devi, an avatar of Parvati, was to marry Siva, but as he failed to show up on his wedding day, the rice and other grains meant for the wedding feast remained uncooked and remain unused thereafter. As the legend goes, the uncooked grains turned into stones as time went by. Some believe that the small stones on the shore today, which look like rice, are indeed grains from the wedding that was never solemnised. Kanya Devi is now considered a virgin goddess who blesses pilgrims and tourists who flock the town. According to another Hindu legend, Lord Hanuman dropped a piece of earth as he was carrying a mountain with his life-saving herb, Mrita Sanjivani, from the Himalayas to Lanka (Sri Lanka) during the Rama-Ravana war. This chunk of earth is called Marunthuvazh Malai, literally "hills where medicine lives". This is said to be the reason for the abundance of unique native medicinal plants in the area. Marunthuvazh Malai is located near Kottaram about 7 km (4 mi) from Kanyakumari town on the Kanyakumari-Nagercoil highway. The sage Agasthya, who was himself an expert in medicinal herbs, is believed to have lived around this site in ancient days. Some believe this is why so many medicinal herbs are to be found on these hills near Kanyakumari. A nearby village is named Agastheeswaram after the sage. Today, there is a small ashram on the middle of the Maruthuvazh Malai hill, which tourists visit (after a short trek from the base of the hill), both to visit the Ashram and also to take a glimpse of the sea near Kanyakumari a few kilometres away, and the greenery below.